What we know about the measurement:

GR Research LGK 2.0 is a passive bookshelves that cost around 1000 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 79.1Hz (resp. 71.8Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.7dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.62 and would be 6.54 with a perfect subwoofer.
      • Details: NBD: ON 0.597, LW 0.519, SP 0.531, PIR 0.498; SM: SP0.875, PIR0.791; LFQ 0.177, LFX 68Hz
    • Tonality (Preference) Score is 5.08 with an EQ and would be 7.95 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.404, LW 0.33, SP 0.368, PIR 0.294; SM: SP0.95, PIR0.932; LFQ 0.22, LFX 67Hz
  • Link to original Review: asr review. Links to other reviews: yt review .
GR Research LGK 2.0
AutomaticEQ (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
PK 138.0 1.29 -2.99
PK 280.0 0.26 2.34
PK 494.0 2.0 -1.35
PK 1067.0 2.75 -0.88
PK 1648.0 2.99 2.98
PK 2721.0 0.45 -2.08
PK 8478.0 2.62 2.52
PK 11454.0 2.24 -1.63
PK 14473.0 0.68 1.91
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
GR Research LGK 2.0
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.5
PK 100.0 2.14 0.0
PK 160.0 2.14 0.0
PK 250.0 2.14 0.25
PK 400.0 2.14 0.25
PK 630.0 2.14 0.0
PK 1000.0 2.14 -0.25
PK 1600.0 2.14 0.5
PK 2500.0 2.14 -0.25
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.0
PK 16000.0 2.14 -0.25
Download
This EQ is designed for a 15 bands graphical EQ.
GR Research LGK 2.0
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 0.25
PK 100.0 4.32 -0.25
PK 125.0 4.32 -0.5
PK 160.0 4.32 -0.25
PK 200.0 4.32 0.0
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
PK 500.0 4.32 -0.25
PK 630.0 4.32 0.0
PK 800.0 4.32 -0.25
PK 1000.0 4.32 -0.25
PK 1250.0 4.32 -0.25
PK 1600.0 4.32 0.25
PK 2000.0 4.32 -0.5
PK 2500.0 4.32 -0.25
PK 3150.0 4.32 -0.25
PK 4000.0 4.32 -0.5
PK 5000.0 4.32 -0.5
PK 6300.0 4.32 -0.25
PK 8000.0 4.32 0.25
PK 10000.0 4.32 0.25
PK 12000.0 4.32 0.0
PK 16000.0 4.32 0.0
PK 20000.0 4.32 0.0
Download
This EQ is designed for a 31 bands graphical EQ.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
GR Research LGK 2.0: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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